... 乙烯丙烯二烃单体 ethylene propylene diene monomer (EPDM) 承插焊的 socket welded (SW) 管接头 coupling- full coupling ...
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socket welded joint 承插焊连接 ; 承插焊毗连
Forged steel socket-welded fittings 锻钢制承插焊管件
socket welded cap 承插焊管帽
socket welded elbow 承插焊弯头
WELDED-SOCKET-PIECE 焊接衬套附件
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